Vibrator



March 18, 1941. J, Q KRENZKE 2,235,158

VIBRATOR Filed Jan. 8, 1940 Patented Mar. 18, 1941 UNITED STATES PATENT OFFICE VIBRATOR John G. Krenzke, La

Donald M. Stevenson, Carrie S.

S. Bathjen,

Application January 8,

6 Claims.

disturbs-pces .ed to apply generei whole or to loeeliee the regions of the body, ain the device provides a tire user 'may stand or sit,

so that the vibratory effects will be distributed greater or less degree to all portions of the body, and may be regulated in intensity by controing the motor speed at a :.'ate which is most eitective for antT specic case in order to produce results that are pleasant and beneficial to the user.

Further objects and details will be apparent from the description or the invention in conjunction with the accompanying drawing, Wherein- Figure 1 is a perspective view of the vibrator as 25 a whole in a torni exemplifying the principles or the present invention;

Fig. 2 is a sectional 2 2 of Fig. 1; and

Fig. 3 is a sectional elevation taken on line 30 3 3 oi Fig. 2.

The vibrator as a Whole is mounted within a box-like casing l of metal, comprising a base or oor il, end walls i2, and iront and rear Walls i3, The casing is open at its top, and within the 35 casing are mounted a pair of standards Il located near the end Walls of the casing, each standard being of S-shaped formation, terminating at its lower end in an inturned floor flange l and at its upper end in an outwardly turned 40 supporting ange I6, which flanges in conjunction support a platform I1, which is elevated above the upper edges of the casing walls and terminates around its margin in a depending 5 ange IB which overlaps the margins of the casing.

The standards I4 are formed of relatively thin plates oi' metal having a considerable degree of resiliency, so that when subjected to the vibratory action presently to be described they will,

50 through a minute range, oscillate back and forth in a direction transverse to the plane of the standards, so that a minute and very rapid fourbe imparted to the platform upon which the user stands, sits or lies. in order elevation taken on line 5 5 to receive the vibratory eti'ect imparted by the and Warren A. Stevenson, La Porte, Ind., doingr business as Co.

Porte, Ind., assigner to Logan, Carolyn all of Stevenson Mfg.

1940, Serial No. 312,951

(Cl. 12B-33) apparatus. The standards at their attached to the entered through and heid in piece by lower ends iloor of the casing by screws inturned dau-res afiordeff t. screws supporting flanges it eaoo lie t2, and in eusiiing with a ilse is interposed between the pletiorrn ge l5, with the r entered through an aperture in the flange the parts held in aisee by e washer 248' and the nut 22. Likewise, for the purpose of cushioning the base oi the casing, clependinT feet are provided at each corner, vhich serve to support the casing in elevated relation to the floor or other supporting surface.

It Will be noted that the standards i4 (Fig. 3) are relatively broad in proportion to their height, and that they extend almost the Iull width of the casing, so that adequate neet 2li of rubber o form supported thereby.

The vibratory motions are imparted by an unbalanced motor which is suspended from the center of the bridge plate by a centrally disposed bracket 36 attached to the top of the motor and 

